Hernández-Medina, E., M. A. Lugo-López, and H. R. Cibes-Viadé. “The Beneficial Effect of Filter-Press Cake on Pineapple Yields under Field Conditions”. The Journal of Agriculture of the University of Puerto Rico, vol. 37, no. 3, July 1953, pp. 206-12, doi:10.46429/jaupr.v37i3.12749.